My general rules for upgrading brakes on "street driven" cars is to; upgrade the master cylinder to the size that was originally used by Honda for the car that used the front calipers. which in this case is 15/16inch.
Sometimes the booster requires upgrading due to the size of the master cylinder upgrade so I will use the smallest booster possible to help pedal feel.
I have used this method for a long time and have upgraded countless brake systems in this way, pedal feel is always good in the cars I have upgraded, plenty of stopping power no problems with rear brake bias so long as the correct proportioning valve is used for the rear brake type.
Scott I would suggest you at least upgrade to the 7/8inch 1985 Prelude master cylinder which is just one size down from the 15/16inch master and its a bolt in swap to the stock booster.
To wade into the debate about aftermarket multi-piston calipers IMO the biggest gain is caliper rigidity and reduction of unsprung weight, all alloy calipers and multi piece rotors are very light, one recent upgrade I am working on upgrading from stock 282x21mm brakes to 300x28mm adds almost 10kg per side of unsprung weight.