Hello from Tim & Bessie(advice on mobile grooming business please)

Hello we are Tim & Bessie from Bristol. Bessie is a flat coat retriever & Tim is her pet human servant.
currently i'm a unemployed car valeter but i have a dog grooming course part one booked at Cannington college Bridgwater in march, if i get on ok there then i will follow through to the other courses & hope to change my career & look into either mobile grooming or do it from a shop unit, i've had a look at the k9 van conversions & they look good. What is the best cost affective way forward?
thanks T&B