As the person who cast the final close vote (moderator hat taken off) I chose to do so as the only way to find out if it was possible was effectively to "go shopping" and find one.
Asking if it is possible is a very difficult question to answer, any answers are likely to be based in opinion rather than fact and could well be obsolete by the time the answer was even posted. Technology moves fast and power supplies change faster than you would expect. I can't tell you how to ask this type of question because in my opinion the only people who know if it is possible are the people making the supplies, and the best place to find out is their websites (i.e. go shopping). It almost certainly could be possible, but cost a small fortune, everything is possible if you have enough money.
Before now I have literally spent days trying to find out if particular types and form factor supplies are possible and available and the only way to do it is to fire up your favourite spreadsheet application, make a list of all the specifications that you need and get out on the Internet.
This is not a question that can easily be answered in the question and answer format of this site. It cannot have a simple "this is how you do it" type of answer but instead needs a long discussion of requirements and sacrifices and technologies currently available.
No matter how you phrase it you would end up with a long list of "what about this one?" type answers.