More distributor/advance questions

You guys are probably getting tired of my questions on all of this, but I hope to be finished with this soon.

As (a short) background for those who haven't seen my numerous posts, I had my car restored and motor changed from a /6 to a 340 and now I am in the process of learning how to tune it (the shop didn't do any distributor advance adjustments except for the vacuum). Based on various threads here, I took the distributor out and was going to change the centripetal advance (weights and springs...centrifugal isn't a real force ;) ), but found that the distributor didn't have an adjustable advance. The receipt from the shop said Mopar Performance distributor, so I was surprised that it wasn't adjustable. Maybe it was an old model that whomever sold it had on the shelf or something. Since I have no welding skills to change the advance plate, I bought the kit from FBO (as an aside, the tuning booklet that comes with it is quite interesting...) that has precut slots to use to limit the advance.

So, the question is what advance curve would you recommend? I've seen a few different numbers in different posts, but I'm guessing it can be application specific. I still haven't asked to find out what my compression ratio is, but the camshaft is a XE274H, I have a 5 speed TKO-500 transmission, and the rear gear is 3.23. This is strictly going to be a daily driver type car so I probably won't get into high RPM very often. Based on what everyone here has said, and
Don at FBO when I ordered the part, I am going set my initial timing around 18-20 degrees advance and use the 14 degree distributor advance slot on the plate, for a total around 32-34, depending on slop in the plates and all. The kit lists the approximate curves for their springs, and the options look like using just the distributor spring where the advance comes in around 1000 RPM and is at 14 degrees around 1750. Another option is to use the stock and the light kit spring, but the chart indicates the advance won't come in until around 1700 RPM and will be full in by 2500 RPM. Another spring option comes in around 1700 RPM and is full in around 3000 RPM. I do plan on running vacuum advance, so what sort of mechanical advance curve should I aim for?

Another corollary question is what distributor should I get if I wind up breaking this one? :) I would like one with a more accessible adjustment setup, but it is hard to tell from the descriptions which ones are adjustable (summit said the MP distributors aren't adjustable and another one from Mancini didn't seem to be either).

Thanks for your help!! I am learning a lot about this stuff as I go from all of the info here.