My opinion, worth every penny you're paying for it:
I think it's unlikely that the word count alone is netting you non-responses. Sure, it probably is for some agents -- I'm sure there are a few that have strict rules, "NOTHING OVER 120,000, NO THANK YOU!" But authors have debuted with long novels, especially fantasy novels -- look at Sanderson and Rothfuss. So it's possible.
If your query and first few chapters are mindblowing, an agent will look past the word count. And in your case, your word count isn't even ridiculously long for fantasy. I'd spend time making sure your query pops (looking at your post in SYW, it needs some work), and your first few chapters are incredibly engaging. Also, make sure both are terse -- it'll show the agent that those 148,000 words are truly necessary, not just blathering.
'Course, this might be wishful thinking on my part, since I'm in the same boat as you. But most of the experiences of writers in my group has been that agents are likely to say "Cut and resubmit" rather than "No" if it's only your length that's giving them issues.