Since you are lifted < 2" you can get away with stock length shocks so you don't need to do "as much" digging.
On the front, If you want to get a little more down travel at the cost of up travel you can put some washers (just a few) between the upper shock bushing and the built in, washer looking thing the bushing sits on.
Once you get > 2" of lift you need to switch to longer shocks.. but for now you don't..
As for the type/brand. I didn't like the 70/30 Duff shocks when I ran them. I only ran them a month and I had Duff progressive rate springs with them. They were too soft and didn't control the suspension.
I don't think Blistens are going to be in your price range but the Rancho's 9000's should "just be". The front rs9000XL's (adjustables) are just < $100 from amazon.
Also, 4wheelparts is having a buy 3, get a 4th free (using a mail in rebate), so that is another option..
I haven't tried any other brands on the explorer but Blistens and Procomps seems to get decent reviews (Procomp is on my short list for when I need different shocks up front).
Thanks for telling me that i didnt know deff might not get those then
~Mark