Which extensions will I need?

Dear Friends,

I'm jumping into eCart5 headfirst with a project that requires the following for a cooking and kitchen utensils store:

• A member login process.
• A solution where only logged members are able to view prices.
• A admin backend for the store that the client can manage products, etc.
• No payment gateway required, only a 'wish list' that is stored in a database.

Am I correct is assuming that besides eCart5, I'll need Security Assist to build the login and 'protected pages' function — and the combo of DataAssist, Digital File Pro, SecurityAssist, Cookies Toolkit and CSS Menu Writer to create the store backend?

Also, client has product info in an Excel spreadsheet. How would that integrate into the process? (About 75 products total, in 5 categories).

I have the main pages ready to go as Dreamweaver templates (home, product section page, and product detail page.)

Sorry for the swarm of questions, just want to make sure I have the right tools to proceed, and I'm not overlooking anything. Thanks so much in advance for any guidance anyone could provide!