I have been asked to do a project that is a little off the normal path.

A local software development company wants the text from a quote redesigned to be aesthetically appealing and then painted onto the wall above their conference area. This is part of a office makeover and the part of the project being handed off to me is to surprise the CEO (and he is unaware that this is being done, with exception that a surprise of some sort is budgeted in). What makes this unfamiliar to me, is that my physical work (not printed) will be showing in the main room of this business.

I know we are not to discuss pricing, and we won't. I am however trying to size up the situation so that I can make my final quote for them.

I have discussed coloration, sizing, amount of time the room will be available to me, and who the project is aimed at pleasing. I feel that as of now this job is as good as mine unless I quote myself out of it (I'm striving to be fair to the client and myself)

So what would you take into consideration when trying to deal with a new type of project such as this?