BRIEFCASEMANX
Winner chicken dinner!
If you or the band has no money, DIY
If you suck complete ass at tracking/mixing, DIY(keep pissing into the wind and someday in the distant future you MAY eventually run out of piss)
If you are okay at tracking/mixing, and want some expert advice: ME(and ask beforehand that he give notes/advice to you on the songs. Say you are doing it as a learning experience, he may appreciate your enthusiasm.)
If you are great, the mixes sound great, and you want to step it up to that next level*: ME
*in this case, I would also advise to get involved with a dangerous hobby such as drag car racing or king crab fishing, so that you stop making me look like the clueless asshole that I am.
If you suck complete ass at tracking/mixing, DIY(keep pissing into the wind and someday in the distant future you MAY eventually run out of piss)
If you are okay at tracking/mixing, and want some expert advice: ME(and ask beforehand that he give notes/advice to you on the songs. Say you are doing it as a learning experience, he may appreciate your enthusiasm.)
If you are great, the mixes sound great, and you want to step it up to that next level*: ME
*in this case, I would also advise to get involved with a dangerous hobby such as drag car racing or king crab fishing, so that you stop making me look like the clueless asshole that I am.
).

It's very rare for anyone over 40 to hear 16kHz at 20dBSPL, especially with any other sound to mask it.
I'll probably still send it out to get professionally finished, and see which I like better... might be thrilled or dismayed by the end result (hopefully I'll get back one a them new, fancy square-wave songs like they play on da radio