A minimash is really easy to do, its the same as steeping except you hold it for a bit longer at a specific temp. You should go for it.
But if you're not so inclined, you can get
munich malt extracts. Here's what I would do to convert the recipe to extract/steeping:
Original:
7.25 lbs pale ale malt
4 lbs vienna malt
2 lbs munich malt
.75 lbs Weyermann CaraWheat Malt
.25 lbs Weyermann CaraMunich Malt
.25 lbs melanoidin malt
Change to:
9.25 lbs pale ale malt
4 lbs munich malt
.75 lbs Weyermann CaraWheat Malt
.25 lbs Weyermann CaraMunich Malt
.25 lbs melanoidin malt
Then to convert to extract, assuming 70% efficiency so an OG of 1.068:
3.75 lbs liquid pale malt extract
5.75 lbs liquid munich malt extract
Steep:
.75 lbs Weyermann CaraWheat Malt
.25 lbs Weyermann CaraMunich Malt
.25 lbs melanoidin malt