The young guy has decent postion experience at RG also. So, to me with a thin line I might want him as the back up to fill in cause he is better or will be better.
But for now, and I think it's a gamble either way, but if it ant broke don't fix it rule might apply also. Most of lellows pressure comes from that side so you would think pass block could work here. But both teams run alot.
Again, it will come down to the rolls his LDE is weak at skill but has athletic ability. Your RT is a small RT who s better FB/TE .....here he might be exposed. Weaker smaller slower. It's so close either way for me I started to think would it be best if that young guy started at C instead.