My first thread

First I'd like to say "Greetings!". I'd call myself a beginning gospel guitarist (until now I've just been playing songs by artists like Relient K and Lincoln Brewster), and I've been learning to accompany my church's praise team (keys, bass, drums). So far I've just been playing power-chords, E-and-A shape barre chords, and other simple things like that. But now we're learning a new song. I believe the song is titled "Let's Just Praise The Lord" by T.D. Jakes. It's one of those songs in which the guitar basically improvises licks and does some chords here and there when licks aren't appropriate.
Now, here's the thing: The horns' part is SWEET! and the song really could do without the guitar part (our keyboard player is awesome, and she does all the riffs and things, since the keys part is simply chord "stabs" or whatever you call it) so I've been learning the horns part on my guitar. Does this seem like a good idea? Does anyone here ever do things like this? Is it a feasible idea to fill in the part of another instrument like this? Or does it just seem weird and amateurish?
Gospel horns are so sweet, and I've planned on playing my guitar in a horn-style, but after browsing the site and forum, I feel like I'd be a traitor or something

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So... that was a long-winded way of saying "Do you think it's a good idea to fill in for missing instruments e.g. horns, strings, harp, etc. on the guitar; or should I just learn how to play REAL gospel guitar?"