Charliekeet

Hi. You say that the frame is light, but then you say it is stout, and needs to be sturdy because you are a Clydesdale. [EDIT - So am I, and you could make something better and durable even from a less "sturdy"-looking road bike, or with an older MTB as a base.]

I know a couple of things, and one is that those frames are NOT light. I once did a clean/lube/adjust on one of these, a yellow one that I picked up for free, and the next day I just put it out for free. It took a while, but someone eventually took it. I had it laying down as I didn't want to chance it falling onto the sidewalk and having someone smaller hurt themselves trying to move it. They are shockingly heavy versus anything but a rideshare bike, or a gaspipe + chrome job from the 1950s with a bunch of unnecessary stuff bolted to it.

The other thing I know is that there are so, so many better bikes out there for free or almost free to start with. You will spend less and have a better result. Tell us your preferred Craigslist area and there are dozens of people on this site who can look and pick out a dozen better options, and go through what's worth doing and what's not, and why, and how to do it. That thing is just not worth it- cut your losses.

Hell, you already have 2 better bikes based on your signature, so you know you can get quality stuff for not a lot. Two of the best road bikes I've ever had I got for free and spent on refurb and parts and it's really satisfying.