Hi Comp+ X Heads+ 93 Octane possible?

You're going to spend on heads. Period. Good iron heads (meaning properly done for performance, good valves & parts, and some form of porting to attain flow rates of a performance aluminum head) will cost as much as medium price point aluminum. So if cost is the worry, you're spending regardless. Aluminum gives you less weight on the nose and overall, better chambers, and easier porting in addition to higher overall flow potential. Spend away...