As is this is probably a bad bet.
Even though you can make huge gains on your dead (precisely because you haven't trained it specifically) if you train right, 3 months is
really tight.
That said, here's my 2cents.
1st, plan on cutting weight. If you're like most american males you can probably cut at least 10 lbs and still get stronger. I'd shoot for a bodyweight of 150 - 155 and a plan on pulling 450 - 465 on test day. Olympic weightlifters in the 150 lb range can full far more than 500lbs in the dead. Thin, wiry, freaky strong, w/ legs like car jacks is the goal.
-Train 5-6 days a week.
-Train very heavy using a low rep (3-5 reps per set), low set training plan (2-3 per day).
-Cycle your loads and never train to failure.
Avoiding failure and keeping your reps and sets low will eliminate the need for long multiday rest periods. You'll need to pack as much training into 3 months as possible while still staying fresh every day.
Eliminate "beach work" while on this program (benching, curls etc).
I would train only 2 exercises while on the program. Deads and Overhead presses
Here is a plan. Assuming 315 lb 1 rep max.
315 * 85% = 265
Week 1 (Lbs X Reps X Sets)
Day1) 265 X 3-5 X 2-3
Day2) 275 X 3-5 X 2-3
Day3) 285 X 3-5 X 2-3
Day4) 295 X 3-5 X 2-3
Day5) 305 X 3-5 X 2-3
Week 2 (Lbs X Reps X Sets)
Day1) 275 X 3-5 X 2-3
Day2) 285 X 3-5 X 2-3
Day3) 295 X 3-5 X 2-3
Day4) 305 X 3-5 X 2-3
Day5) 315 X 3-5 X 2-3
Week 3 (Lbs X Reps X Sets)
Day1) 285 X 3-5 X 2-3
Day2) 295 X 3-5 X 2-3
Day3) 305 X 3-5 X 2-3
Day4) 315 X 3-5 X 2-3
Day5) 325 X 3-5 X 2-3
Week 4 (Lbs X Reps X Sets)
Day1) 295 X 3-5 X 2-3
Day2) 305 X 3-5 X 2-3
Day3) 315 X 3-5 X 2-3
Day4) 325 X 3-5 X 2-3
Day5) 335 X 3-5 X 2-3
Note: This workout has you adding approx 10 lbs per week. In 12 weeks it will have you pulling 425 for 3-5 reps (assuming you can keep up), that should be good for a 465 lb 1 rep max.
Follow a similar program for your standing (not sitting) military presses using the same % starting point of 1RM except you'll probably want to add 5lbs or less per workout.
Eat lots of protein and all but eliminate carbs / sugars from your diet. For weight loss - rowing ergometer - tabata squats (in moderation) -running - swimming - nordic track - etc, will fill the bill.
Buy this book -
http://www.amazon.com/Power-People-Stren...7578&sr=8-3
To learn about body mechanics techniques that will make you stronger - faster; Pressure breathing, muscle tension techniques, etc.
Good luck
BM