At my age, any sex is special! All kidding aside, I could handle the build and the downstream service. I spent 50 years as a technician and designer and installer and servicer of building automation systems, computer based fire alarem systems for high rise office buildings etc. It's just that I just don't want to do it anymore just like I'd rather let someone else develope my film.
There's nothing wrong with that, it describes over half my customers. Most are technical professionals of one type or the other who just don't care to keep up with the market so they know what to buy, and/or don't feel like bothering with the build.
And from experience I'd rank Dell Service as pretty good. Even marginally better than Lenovo.. but this is based only on my own experience with them.
You'll enjoy the new system, as mentioned before its so far ahead of your old one, you'll be caught up in the slip stream for at least the first few months..