I have see some of TSC's work and it looked good. I do not know anyone in NV that will do a complete refinished conversion.
Are you going to chop the 94 barrel? Do you want a remarked 94 to MP5?
What all do you want done to the 94 to replicate the MP5?
Did you already register the SBR or are you going to have the SBR conversion done by whomever does the conversion?
I am not sure who is doing lathe work at New Frontier, but I have had them chop barrels for me and rethread. The fullauto carrier should be easy to come by, unless your 94 already has it or you want to do a weld job on it.