Okay, after a parental visit and some of the usual how-has-this-many-days-gone-by I am here.
We will deal with the IC concern for Andromeda after the job, the time frame your on is getting smaller and smaller, as is your overall morale in and out of character and confidence in your ability to do this job.
Punch is in a game with me as GM IRL, he can attest to the fact I will not screw you on a job I feel you are prepared for unless it is appropriate. Your only concern should be if you have knowably fragged up the prep all ready. As it stands they still have no idea you are breaking in and you have a pretty solid set of options for how you want to handle it, including an inside mage.
One problem here is It seems to me you still have not decided on your plan for the heist, your using every resource you have right now to prepare for it but you have not decided what you are going to do on the night.
This is of course in large part due to Andromeda's disappearance taking the truck from you but you have still never gone ahead with trying to steal another, getting another or planning to trust your skills to improvise stealing the truck on the night.
You have a very competent technomancer, a more than capable manipulator and characters who can hold their own in a fight, stealing is an option.
I actually introduced an NPC who would be very appropriate to call on right now.
You are all very skilled players with skilled characters, you are unlikely to fail taking the truck on the night if you did try. You have set up so much inside the museum that you will likely be in control of everything but the human element by the night and Azzie and the guards won't expect hijackers to be waiting INSIDE the museum.
Give up on Romy for now, and as for Punch's contact's request, it is simply Risk versus Risk. Risk stealing it on the night and messing up the job, or risk Punch having to deal with his contact after the job sometime, it doesn't need to be debated for months.
I have probably failed to answer questions in this post but this is where i stand at the moment.