I have elected to put the Moki 2.10 in the TF G P-51 kit .
Has the power of a G-62 which is more than enough.

It fits in the cowl without cutting using a PICA muffler. (main reason for my choice)
Doesn't look like I can use the radial mount when using the PICA muffler ... just barely hits the mount!

I'm sure you will get varied opinions, because this is a personal choice.
Gas=good economy
4-Stroke = good sound
Glow = good power/weight and small size but poor fuel economy. (expensive glow)
I'm sure you are aware that the Moki can run on 0% nitro ... but that it idles better with 5%. Needs at least a gallon or two run thru it before use. (Long breakin)

Since this will NOT be a daily flyer for me ... the glow engine will be OK on fuel cost. My Saito 1.80 drinks about the same ... but 20% nitro.

Sometimes when you compare the price of engines, the glow is a lot cheaper thus giving you fuel money to play with. Although I say this, I seem to find ANOTHER item to purchase with this "saved" money.

Good hunting ! Have Fun !