Love the visual on the front, I think that would work for you. If you are going to go with a question type headline I would keep it simple with something like: Ready To Remodel? as big as you can get it across the top of the front of the post card.
For the back I would keep it either very simple or very wordy your choice, both are as effective as the other, but no in between. Keep the message effective and choose your voice, conversational and personal or 3rd party professional
All your message needs to say is 2 things: What you can do for your customer and a call to action to contact you.
My name is #####, I remodel homes just like yours. I transform old, out-dated and disfunctionally designed houses into dream homes one room at a time.
Licensed & Insured
450 years of experience, in biz since 1904 ect...blah blah blah
$750 discount with this card.
Call me today at 555-555-5555 for a free, no pressure consultation.
I wouldn't bother telling them about the chocolates, it is a nice touch, but it isn't going to make anybody call you over another person who isn't offering the chocolates. Keep it as a nice surprise when you get there. As far as being in the area line - it makes more sense to you than a potential customer, they could careless if you are in the area if they are just getting a unsolicited postcard. If it is just a postcard that is going to arrive in the mail it is no different than any other advertisement from anybody else.
If you want to market to neighbors surrounding a project that you have going, I would get a yard sign with a flyer box attached, and I would door to door the surrounding houses with a flyer or a door hanger that gives you room to present your message and invite them that way. A post card I think is just too small and you need to be too generic in the message since you are printing them in bulk to be price effective and the message has to apply to so many situations.
Everybody who is spending hard earned money on direct mail should get a copy of Herschell Gordon Lewis' book "Direct mail copy that sells!" It will clear up alot of confusion and allow you to focus, get a clear direction and become effective.