You can encap and bonnet many restaurants but if the soil level his high to very high it may be faster to extract. Time is money so you would have to figure your setup time loss compared to your extraction savings in that scenario.
If you do encap use a good one and take many cotton bonnets. If the first pass is black, do another with a clean bonnet until they become lighter brown. The encap should take care of the rest. Also, you may want to consider applying a quality protector especially if your going to encap and bonnet in the future.