It's too early to tell, but I expect them to be a good combination. The SMB just went in last fall as 6"-8" size. The YP went in fall of '19 and are doing very well so far.
I caught a YP 11" a couple weeks ago, and I see several that are considerably larger at pellet time.
The accidental BG and the RES I consider to be outstanding. The original stockers of those were put in June/July of '19 and are 10"+ and fat like footballs.