What hands do you think villain can have on the river after you XR flop and bet turn?
His range is very capped (narrow) and should consists of mainly straights and missed flush draws and maybe two pair hands.

Now what sizing do you thin they will call and if they would bet if you check.

Most hands wont bet unless they have you crushed and perhaps some Asx hands make a bluff. So checking is probably not giving you much value.

I personally would bet around 1/2 pot maybe a bit larger as that probably gets a lot of crying calls from the opponent.

Dont you think this hand is too weak to take this line ? you kind of isolating your self vs a lot of pairs and better fd with the xr otf.
4 and 5 pribably not going to get you good pair on rivers and when you hit you can be dominated oop.

Thanks Guy! how would you guys play it?

I think that with the proper play on the flop and/or on the turn, we can have a lot easier and profitable action on the river. If you are not using a pure check simplified strategy for this kind of flops in BvB (and I think it couldn't be fine in this case), I will cbet with a high frequency with this kind of combos here for a lot of purposes related, above all, to the fact that both ranges are very wide and the flop texture. You can probably even choose a small size because of were this combo is located along your range.

If you choose to check on the flop I don't think you can go wildly with raising your flush draws, because of your check/calling range will suffer this too much. Same story with the follow up on the turn after x/r the flop.
Try to think about what flushdraws are best to x/r, but be aware of the texture and the ranges; same story on the turn with your cbet after x/r. In BvB the same basic concepts of poker are always valid, but sometimes strategies can displace us because of the assumptions of this dynamic, or just because we haven't sufficiently familiar with the importance of some concepts.