Hello...
When i see : no translation , only 3 payment methods and no Fedex / UPS shipping method included (only manual shipping), i feel very disappointed... that all for E-commerce ! Sure it si compatible with SPPB but prices seems to high compared to Hikashop ( 53 payment methods for same price, Fedex + Ups also integrated for 49 euros version !!) .
Please have a look at Hikashop Business offer .... and adapt yours . There component can adapt to most of templates.