Hello @Susie C.
You vet an Architect by looking at his/her prior projects and familiarity with the project type and location of build/construction. Also you can ask for the references for other clients whom they've worked with for an idea of how they work, communicate and timeline/scheduling norms.
I will be the first to tell you filing with a jurisdiction can be challenging and not by any fault of the Architect unless they've done 100s of buildings/houses in one area/location. Sometimes it's the wild wild west in the building dept. and the difficulty in getting permits could be based on the Plan Reviewer you are stuck with. In nearly all the jurisdictions I work in, you will not get through on first pass and a lot will have a second round of comments too. Even when the set of drawings are all encompassing. This shouldn't be labeled as an ineffective Architect.
Anecdote: During Covid I had a SFH to 2-fam conversion residential project. It was a complex project and required some in-depth due diligence. Upon filing, the Reviewer had some odd request and objections. I corrected them and yet again another list of objections came through. This happened several times and even meeting in lobby once (no in person meeting were allowed due to Covid). Through some coercing, I finally got a zoom meeting with the guy. Then we were able (with his supervisor on the zoom call) to come to agreement and gain approval. In the end this took close to one year to achieve. Disapproved 6 times. ALSO- This jurisdiction mailed out objections so between submission there was 6-8 weeks of waiting. It was grueling and the Owner was not happy and complained constantly. In the end we got the permit and construction went on. There was no empathy in that this was one of, if not thee hardest time to try and get anything filed due to everyone thinking the world was going to end. I say all this to mean- there are forces out of the control of your Architect and red tape and bureaucracy can slow things down. The Architect should be prepared but some of it is just unavoidable.
Now speaking to the part about doing the work yourself, be sure you know what you are signing up for. 9 times out of 10 you will not save any money. You'll loose a large amount of time and/or money or both. Especially if you are not competent on basic construction methodology, means and methods plus what constitutes Code compliance. Unless you have a greatly understanding Contractor which you personally know and won't try and rip you off, I'd get one done by a Builder and try and shadow the project as much as possible and try it on your own for the next one. All the best!
-Jared W. Smith, RA - Principal Architect at Architect Owl PLLC (Licensed in NY & CT)