We did it ourselves with only a mediator. I did talk to an atty to get some basic guidance, but he never got involved beyond that. My ex-W used the internet for research. Honestly, the internet provides adequate data if you are selective in what you believe and if your situation is pretty average. You can DIY using a mediator to come to agreement.
The caution I would offer is to be sure you are getting what you deserve out of all this. I don't remember the details from your other thread, as I can't keep all the stories straight from all the different threads. Some people may get steam-rolled in mediation or DIY. Also, fair may not be the same as the standard courtroom outcome. You should seek fairness first, then find a way to make it work within the legal maze.
There are some traps, such as whether something is amendable or not in the future. My preference is not to be amendable, but your circumstances may be that you want things to be amendable. For example, if there is a reasonable chance his income will go up a lot, you may want alimony to be an open topic into the future. He of course would want alimony to be a closed topic. Another trap is when you DIY there is no court discovery. Here we didn't have to file forms with the court with our full financial disclosure. We were supposed to give disclosures to each other. If she had a secret account somewhere with lots of money in it, I would not know about it. When you use lawyers, your lawyer will require her to provide a sworn affadavit that her disclosure is complete, and your lawyer will likely run some kind of full check on it. You can run a credit check on each other and find out if there are any secret bank accounts. I don't think investment accounts show up. Idk about real estate owned without a mortgage if that would show up.
Getting the paperwork exactly correct was my biggest concern. I hired an atty to do the quit-claim deed on the house so that it was locked down tightly and filed properly. I didn't want any questions in the future about it, or any liability tail attached to me.
Even if you are in total agreement with your stbxh, you may want to pay a lawyer to review the documents to be sure they meet the legal standards where you live.
The state court provided forms here were quite comprehensive. As far as filing the divorce, her name change back to her maiden name, division of assets in the decree it was all quite easy using the state online forms.
Be sure to get all the miscellaneous things taken care of. Change beneficiaries on everything like life insurance, bank accounts, retirement accounts, health savings accounts. Update your will, power of atty, medical directives, medical power of atty, etc.
Get all property deeded over to just one of you. Cars and house should not remain in two names after the divorce except for a very short time while refinancing.