The concept of doing a 10x3 and then 3x10 day is a good idea (and the 1x30 is great for active recovery). But only trap bar deads and DB bench is kinda skimpy, at least in terms of a mass phase IMO.
I'd suggest at least 4 compound exercises though; one focusing on each part of the body; IE- bench, row, trap bar DL, overhead press -or- dip, chin, squat, power cleans. That's just my personal preference on how to do total body though. You may decide it's too little or too much.
Experiment! But add at least 2 more compounds in there, if not to add some more mass, then to at least help prevent imbalances (which will hinder your gains, and even worse, you'll end up hurting yourself).
My two cents.