Si Senor! You can do without that cam and the lifters it would be best with, for now. BUT, while you have the engine open, that's the best time to do a cam job! The Isky cam and the associated components run just over $1100 U.S.. Get that spreadsheet open, make a parts list page in it, and enter that detail. You also WILL NEED a good phenolic spacer for your carburetor. I used a 1/2" one, but for where you're at and ROAD driving, a 1" will do you better. Nice thing about phenolic wood spacers is that in addition to insulating your carb from engine heat, the increase the plenum depth so essential to optimizing fuel/air mixture. They deliver an excellent return for the modest expenditure. If you ran in the cold, I'd advise aluminum, but you don't, so I won't.
Your stock cam will control that engine with a fair amount of justice as matters stand. The rube price of a new 'Brock 1905 will run you say, $450 U.S., but you might do considerably better with some clever browsing and shopping. I see the Edelbrock Performer RPM intakes running around $400 also, though again, you can do a bit better. You'll need their adapter for your throttle cable, then something for your fuel line. Here, I like using the Inline Tube line for the Carter AVS. That, and a bit of heat shielding supplies my 1405, and I reckon such should do nicely for the 190X carbs also. Of course, the higher rise intake of the RPM MIGHT require a bit more modification of the throttle and kickdown linkage, IDK. You'll want to consult a more experienced source than Yours Truly for THOSE details.
Still, expect to drop a kilobuck + change to get your engine breathing right. I got off a lot cheaper by the grace of the Almighty, 'tis true, but if you allocate the kilobuck, then discover you only spent half of it, that remainder can go for the Next Stage of your engine improvements. I fitted dual pipes to my plant this past spring, and even with stock manifolds, the engine picked up a bit more performance on the low end, which is where I wanted it. I already HAD the pipes, from Gertrude's predecessor, so again, I skated on expense. Good exhaust will run you from half to one kilobuck, more if you get headers. I won't, because I live in a low RPM environment. You might consider otherwise though....