I'm looking at building a Honda CT90 with a 125 Lifan or 140 lifan or 140 Piranha. I really want to get a 140cc, but it is around twice as much as the 125. Is it worth the extra money for maybe 2hp? If I went with a 140 what one should I get a Lifan or a Piranha? I'm really not sure what way to go a little more power or cheaper.

I plan on using the bike for playing in the woods and just cruising around to check trail cams. I think I would be satisfied with either engine.