I have been thinking about trying to add weight to my bench press. I am 28 years old, 4'11" and I weigh about 105lbs. The most I have ever tried on the bench is 95lbs and I fail at about 6 reps. I workout 5 days a week for 1.5 to 2 hours. I would really like to be able to put up a plate on each side, so 135lbs. I do not even know if this is possible knowing my size. I'm happy right now with my decline, but I would really like to improve on the flat bench.

I am not sure how to go about this. I am assuming I may have to put on a little weight, maybe eat a ton more protein. I am looking for any help and/or suggestions.

Could you somehow switch to a lower weight and continue doing reps as part of the same set?