Is my Savage X conversion worthy?

Lately i have really been wanting to do a conversion. i have had a lot in mind, but never really got around to converting something. right now I am looking at a Savage X roller. it has a new spur gear, HS 645Mg servo, and is in fairly good shape. i would like to do a conversion using HW 150A esc and a KB-45 motor off towerhobbies.

i was planning on locking the truck in 2nd gear, but now i'm thinking i might be better off just buying the Flux. the Flux comes with an ALL metal single speed, and a metal spur, along with the right gearing, battery trays, motor mount, and the MMM combo (blur). my question is, is this truck worth converting, or should i sell it and look into converting something else? Or even sell it and buy a Flux? I don't have much to spend, and although i have been doing brushless for a while, never a conversion. Just looking for your thoughts/if my truck could handle a setup on 5s or maybe even 6s.