Amazon site seo service and linkbuilding Advice needed

Hi everyone

i bought a amazon affiliate website from BHW marketplace with 10000 article and premium theme and plugin
total monthly search volume 20000+
10 product comparision
hosting and domain its own my self with ssl certificate ..
so now i am going to buy a seo service from someone else
anyone know best seo or link building services in BHW
please suggest me

thank you