It mainly depends on your skill set.I believe your rig is the new one with the mobo that has to be removed for upgrades.If so thats a con there. Secondly you might require a second coat of LM at a later date if you didnt get it quite right the first time so ergo twice the work. LM if applied properly should last longer than any of the pastes before a re do .If you have any doubt about your abilities, dont do it. If you do I can say that the Coollabratory Ultra is fairly easy to work with.Not quite as highly rated as the grizzly stuff by a minimal margin but more of a pasty consistency that does not run all over like those terrifying videos the sensationalists post,very stable.I stenciled my heatsink LM application and the sharp lines on the border after the tape was removed could not be moved by slapping the heatsink on the side of the table, So! If you trust your abilities go for it.The biggest danger involved is when you lower the heatsink onto the mobo.If you dont have the die and heatsink contact patches aligned, things can go south quickly and you cant see it happening. Particularily when you are using the recommended Foam Gaskets for Just in Case Protection. (Check my Posts) .