what to keep and what to sell. questions questions.

From what I am reading, (little experiance wih sb motors) if it is a budget build, Magnum block (for ANY build, due to better iron in block, rollercam) EQ heads reworked, pick the rest for the manners you want. I understand the Magnum blocks can handle more hp than LA blocks? While not symple to do, the Magnum block could be used with LA heads, but it will take some work to do. That would open up a lot of head choices.