Brand new attorneys don’t make very much money. Especially those who haven’t taken the bar yet. Lol. Anyhow, I don’t have the plans. I crawled down there. It’s a tight spot. I’m 5’8” at 165lbs and it was a tight fit for me. Ideally, I’d love to do it myself. But I don’t have the slightest clue on how to design a plan. I’m fairly handy. If told how to do it, I should be good. I’ll gladly take a recommendation.Well you are an attorney so I’m sure you can manage. Do you have the construction drawings of your house? Something that calls out what the joists are? Spacing? Span? Etc. if not you could document it yourself. Go back down in the crawl with a tape and verify what you have then sketch out. Figure out your weight based on number of gallons in system plus tank weight. Dimensions of tank to know how load is spread out. Then send that info to a structural engineer. They would be cheaper (and probably more qualified) than a licensed architect. Depending on your crawl depth the work will be a pain (mine was). You doing the work yourself or hiring someone? Engineers are really busy this time of year so let me know if you have trouble finding someone. Should only cost around $200 +/- to have someone licensed to run some calcs for you and give you a couple details on what needs to be done.