It's a sound strategy, but it is an expensive one. I have tried out Zargrul before and made the mistake of buying my copy. In the end I didn't use it much and ended up selling it for a slight loss, but it took forever to sell! Smart move renting it first to see how it works it works out.

Let me know how Gargug is as an archon, never tried it out. I hope you do well with the strategy, too bad you ended up having to rent an archon just to use what you rented though. That was a pricey mistake! Keep up the good work and good luck!

!BBH
!PIZZA