Going to 10 with iron heads and pump gas requires eliminating all the possible detonation sources and having the right curve on your distributor and a very, VERY well-tuned carb.

With aluminum heads it's quite easy since you can go a full point over iron with an equivalent short block.

Many of the steps you'd have to take can be expensive and are probably not necessary for what you need. Most people can't tell the difference between 9.2:1 and 9.7:1 on the street, even with a calibrated SOTP meter. On top of that, as Bob mentions, keeping it tuned becomes a bigger part of your hobby than just enjoying the ride.

IMHO, build the biggest 9:1 street motor you can and spend the $5k you save on the coolest paint job and the best interior.