Hey Cliff
I listened to these songs. What is your goal for the songs? Pitching to artists to record? Pitching for Film/TV? Who is going to do the final production-- backing track, mixing vocals, final mix, etc.?
The first thing I noticed is the recordings aren't broadcast quality to pitch right now, even with a great vocal. Even for artists to re-record, the bar is very high these days. The demos they get are almost full radio productions. Also, to get an artist to cut your song, is one of the hardest hurdles out there even for the very best songwriters. Film/TV is a more attainable market but your recordings, lyrics (universal), style, and many other factors go into it.
Were you thinking of hiring just a vocalist? (usu. around $150) or having a demo service record an entire demo for you (typ. $750-$1250)? Or upping your own production skills to get the recordings where they need to be?
I'd hate to see you spend money yet without other factors being in place. One suggestion I have, since you are a Taxi member, is get a custom critique for these songs ($20/song) or maybe the one you think is strongest. I thought the wedding song had more potential. Make sure lyrics are in there and have a list of questions. It sounds like you mainly want a general songwriting review. It would be money well spent.
Also, can you PM me the lyrics with your email address? I can give you more of my own feedback if I can read along while listening.
Hope this helps!

Casey