Based on your timeline, you need to be upping you max by 2.27 lbs per week, for the next 12 weeks. That puts you at 300lbs one week out from your meet.
This seems completely reasonable as a goal over the next 3 months.
This scenario to me seems like a place where a basic Texas method approach to upping your numbers would make sense. You don't need fancy, just a basic slow climb to reach the summit.
Mondays are heavy bench days utilizing a 5x5 scheme. I prefer a Reg Park style approach. Two progressive warmup sets, and three heavy worksets.
Wed. are for assistance work. Close grip, presses, ect.
Fridays are the day you up the weight by a fractional amount and hit a new workset number. This new workset number becomes Mondays next workset number.
Nothing fancy just a nice slow climb. This can be done. Get the fractional plates out, and start climbing.