PHPBB3 Board update and mods added

I need somebody who knows how to add mods to a phpbb3 board without problems. I also need somebody who can update my board from rc8 to the gold edition, as well as add in a mod for a quick reply button/box (so users don't have to click reply, they can just type in the box and post their response immediately), a mod so that when a link is clicked on it opens a seperate tab/window for the new link rather than navigating you off the site and a mod which would change the quoting system so that when you click on quote below somebody's post it only quotes the last person to post...not the quotes they quoted (in other words if person 1 posts, then person 2 quotes them, when person 3 clicks on quote under person 2, it only quotes person 2, not person 1 and 2). The person i hire also would need to be able to apply the mods on a seperate server/board so I can see that everything is working without a problem before they apply them to the working site. I had a problem with adding mods in the past and would hate to see that happen again. So if you are bidding on this job, please specify that you can show me a working copy of the end result on a seperate page before applying to the working site. Thanks again, i appreciate everybody's hard work that i've dealt with in the past, and hope to find somebody equally as talented for this project.