I go once or twice a week if the weather holds and I'm up to almost 8 months (and I am still not done (PPL)).
I work with a guy who religiously went 3 days a week and said he got it done (at a part 61 school) in 6 months (almost exactly).
The limiting factors are of course money (which does not sound like you are worried about if you are planning an endeavor like this). And of course weather (which you can mitigate by going to a place in the country that has better year round weather like the south west), if you come during the summer and get 3 solid months of clear days and potentially never have a flight canceled you will be good. I have had 3 flights canceled in the past 3 weeks due to high wind or rain.
As for booking you can book as many hours as your instructor/aircraft will allow. Some instructors are part time which can limit how much you can book, and some schools have only a few planes but generally allow you to book way in advance so if you have the plane and instructor you can book every hour of daylight if you like. Keep in mind that trainer planes have 100 hour inspections and will be out for maintenance when another student inevitably has a prop strike...
As for ability that depends on a lot of things. You will most likely get the maneuvers down fast and then it will be all landing work. If you get those down fast (and they say the more frequently you fly the better it is) you can be done quickly.
You can mitigate some of this by self teaching yourself the ground material, although some schools (if not all) will require you to sit for a certain amount of ground lesson hours.
The amount of hours you get in a single day will depend on what you are doing and how long you can be up for. The way I was taught there was usually some pre flight instruction (outlining what we were going to do). Then I had to preflight the plane. Then get in, taxi out (I was at KPNE, so there was a solid amount of taxi traffic to contend with on occasion) go practice maneuvers or stay in the pattern and practice landings then some post flight discussion. All told for an hour and a half on the Hobbs I would some times be at the airport for 4 hours or more. I would think that realistically (assuming you need to eat lunch in the middle) and discuss things on the ground etc, you could get maybe 5 hours of actual flight time in, in a day. This will also depend on the season since the days are significantly shorter in the winter. Up hear in the north east there is a solid extra 2 hours of day VFR time in the summer.
You could on some level use a sim before you went about this to familiarize yourself with the aircraft instruments, how they work, and what certain control inputs will result in. A decent setup using X-Plane will only cost you a few hundred (USD) and be a lot of fun in its own right. The issue you will hit is that to much sim flying can result in BAD habit development. Sims are a great learning tool but don't always feel like the real thing so as long as you use it as a learning tool you will be fine. Some sim's even allow for simulated ATC communication which can really help you hone in your radio skills (something that will be overwhelming at first.
I see in the comments that you wish to one day fly a P-51. Assuming you are talking about doing so solo its worth nothing that the P-51 is a "Tail Dragger" also known as conventional landing gear. Most modern trainers have tricycle landing gear so you will have to get checked out in a conventional gear plane. You will also need a high performance rating to fly a plane with that much power as well as complex for the folding landing gear. While we are on the topic you mention flying lots of different types of planes this is not as simple as you would think. Most places will require type specific time (time in that particular model of aircraft or a very similar one) before letting you fly/rent it. To fly in lots of different aircraft right after having you license you will be spending lots of time with instructors in the plane as apposed to solo time.