pre would be maybe too loose utg six handed but here we are essentially MP because it is a five handed game, still probably a little borderline / marginal.

on the flop we have a five card wrap. this deep even over pair + gs has to fold if we raise pot. The two tens are nice here too making it slightly less likely villain shows up with the dread KQJT. no problem with call though and from a meta game perspective probably nice to have some stronger hands when you peel here.

the turn is a bad card, potentially killing a number of our outs. We also do not have a nut wrap, which is important, and it is somewhat likely that villain can make a straight on a ten or a queen. In terms of nut outs we are now down to three sevens, three kings, and two eights. We do also have a number of non nut outs which have some value, but not really that much. We don't have significant implied odds on our non nut outs and we also have some reversed implied odds as well as the potential danger of being bluffed off our hand. We have some implied odds on our nut outs, mostly when villain makes a worse straight (if he was pushing a hand like T987) or a set.

We are getting 2.25:1 and know eight cards. There are 52 in the deck so that leaves 44. In terms of our nut outs we are looking at a 7:37 or 1:5.3 ratio of nut outs to other cards. Essentially the question at this point is what is the value of our non nut outs in terms of winning the pot (not looking at them for implied odds), what is the value of our implied odds on our nut outs, and do these too figures make up the deficit between our direct pot odds and the probability of hitting our hand. The pot is going to be more than 3x bigger than the turn call, so we don't need to get paid off two often to overcome the deficit. All in all I think we do have a close turn call here, and there is also the possibility of picking off some river bluffs. Being in position makes a substantial difference here as well.

In terms of river bet sizing I think that a large size is best. We have the nuts, and if villain has a hand like a set or a straight, then he will not want to fold it. I don't think that betting small to induce a call from say an over pair is really an effective plan, and just lets your opponent off the hook when he does have one of the aforementioned calling hands. The fact that this card is such an obvious hit for you can play in your favour as well, because that makes it a good card to bluff if you had say KQJ2 ds with spades. So I say three quarters of the pot or so, and hope that villain hits the call button.