Well done on getting the ball rolling in regards to your first client!!!
In regards to a pricing menu you may wish to consider the amount of time you will require to do his work - to begin with this is an unknown.
Cost of software - look around I personally prefer QB & Xero but I still use excel for a few clients.
The amount of support and whether the clients will have online access, how often you will provide business updates.
I tend to sign up a client on a 3 month basis that we will charge hourly then review with a monthly price plan allowing you to see how much work will be involved.
Everyone is different and you will find a way that works for you - i hope this helps.