Cratejoy Expert - Turn PSDs into Cratejoy pages (or customise template)

Hello Freelancers! We're a small UK startup looking to build a subscription box service. We currently have a front-end layout for our subscription box service (homepage). Now, what we need is the following: • When a user clicks 'Order a Box', it takes them to the [login to view URL] URL (using the Cratejoy backend) to customise their box. • User will choose their age, sizes, and style preferences, similar to https://alittlebundle.cratejoy.com/subscribe/141601_A+Little+Bundle and [login to view URL] We will have X pages: Page 1 (step 1) = choose your style preferences (images of different styles, user can click and choose their favourite one). Page 2 (step 2) = clothing size & trouser fit (image of 3 trouser styles + clickable clothing sizes). Page 3 (step 3) = shirt size + shirt fit (image of 3 shirt styles + clickable clothing sizes) + user selects chest size measurement (clickable numbers) + select age (dropdown). Next page = checkout. Details must be saved into a style profile that the user can edit at any point, like the above 2 websites. This will require a 4th page. We will provide the PSDs, but need to know the limitations (e.g. grid sizes, styles we can use/can't use, layout we can use/can't use). You must be a Cratejoy expert and know the ins-and-outs. Thanks for looking!