A little of evrything...the most important thing given that you're already consuming adequate protein though is calories. As long as you up the calories it shouldn't make much difference where the cals come from...as usual though just keep them coming from 'clean' foods though.
I know you said you can only train for 3 months so yes...keep bulking.
I know you said you can only train for 3 months so yes...keep bulking.