I sure hope he does stick with it

I also bought him a small set of ramps with a table top. As he only has a short run up (My garden is only 75 ft long). BMXTRIX what would you say would be a good compromise ?

At only 10 years old and around 4 ' 5" inches tall he aint got the legs yet. So im just looking to set the bike up a little better to make it a bit easier for him. he dont really need the top speed thing as tricks amd the ramp will be all he needs for a while.

I thought maybe a 42 Front and keep the 13 back ? would be better than 38/13 ? Would that ajust up ok without messing around with extra links in the chain etc .. ?

cheers for your time ...