Wouldn't think it would be. I've been looking for a partner for a while but everyone I've asked is either not interested, racing at the downtown crit that day, or otherwise occupied.
So long as the run doesn't come first I see no issue with working with someone else for the canoe. My bike time will be pretty decent, not blazing fast but on a 4 mile course I won't be holding anyone back severely either.
My run is going to be slow. I'm not a runner and my knees have a tendency to grenade when pounded on. I've been practicing at least weekly for the last month and my best is a half & half jog/fast walk pace.
Ideally if the canoe was first I'd partner up with someone for the canoe to get that out of the way then they could just do there own thing for the rest of it. My bike tires are tubeless and I haven't had a single issue with them so far so I'm going to gamble and run light with no spare tube or tools. If I rip a sidewall, badly burp a tire, break a chain, or something else then I'll just take it how it is and hike-a-bike from there on. Probably still carry my little first aid kit though, weighs almost nothing and doesn't take up much space. Would rather have it and not need it, than need it and not have it.
I'm not racing to win or place. I know I won't. It's just for fun for me.