Thanks for posting your builds, it's a little more helpful to us aswell you see.

And yes, it's completely possible. I think even without the other two chapters, but your builds probably are the root of the problem.
Your Elementalist needs something to help the party, and Fire for Factions only kinda sucks. I suggest going Earth with the following:
[unsteady ground][churning earth][stoning][enfeebling blood][ward against melee][weaken armor][earth attunement][resurrection signet]
12+1+1 Earth Magic
10+1 Energy Storage
8 Curses
Your Monk's build is extremely red bars go up. You should remove all of that bar's except for Word of Healing. I suggest the following here, because all of those skills are sub-par at best.
[word of healing][patient spirit][signet of rejuvenation][mend ailment][spotless mind][protective spirit][aegis][glyph of lesser energy]
12+1+1 Healing Prayers
10+1 Protection Prayers
8+1 Divine Favour
The Crit Barrager looks fine to me to be quite honest with you.
Moving onto the other three...
I wouldn't consider using a Mesmer. I'd say use a Necromancer set to a Minion Bomber.
[animate bone minions][death nova][blood of the master][discord][parasitic bond][foul feast][rising bile][flesh of my flesh]
12+3+1 Death Magic
12+1 Soul Reaping
3 Restoration Magic
If you really want to run a Mesmer, I suggest...
[expel hexes][cry of frustration][power drain][hex breaker][arcane conundrum][clumsiness][signet of humility][flesh of my flesh]
12+1+1 Illusion Magic
10+1 Inspiration Magic
8+1 Fast Casting
2 Restoration Magic
For the Ritualist I suggest...
[weapon of warding][mend body and soul][spirit light][splinter weapon][ancestor's rage][life][attuned was songkai][hex breaker]
10+1 Restoration Magic
12+1+1 Channeling Magic
8+1 Spawning Power
2 Domination Magic
For your second Monk I suggest the exact same build as the above Monk build, except removing the condition removal and putting in Heaven's Delight.
You should really get rid of Ursan too, since with Factions you have a powerful skill for sword Warriors and Triple Chop / Cleave are quite viable as strong elites.
I suggest:
[dragon slash][brawling headbutt]["save yourselves!"][frenzy][sprint][conjure flame]["for great justice"][resurrection signet]
12+1+1 Sword Mastery
10 Fire Magic
8+1 Strength
Take out the conjure and res if you want Sever Gash for deep wound application. Make sure you are careful with Frenzy and Sprint. Sprint cancels Frenzy by the way. If you need the title just grind out over the weekend, or do HFFF. Otherwise, go with Sever Gash by removing the Res Sig.
[cleave][dismember][distracting strike][frenzy][sprint][conjure lightning]["for great justice!"][resurrection signet]
Or for Triple Chop, remove Conjure Lightning and Cleave to replace with the Triple Chop and Cyclone Axe, and swap "For Great Justice!" with Brawling Headbutt, also replace Resurrection Signet for Flesh of my Flesh. The stats are the same as the D-Slasher, but in Air Magic instead of Fire Magic. If going with Triple Chop go with 12+1 in Strength.
If you really want, swap out Frenzy and Sprint for Tiger Stance if you're uncomfortable with Frenzy to free up a slot on both builds. For the D-Slasher I suggest taking the conjure, and the axe Warrior Brawling Headbutt for the Cleave one, and Disrupting Chop for the Triple Chop one.
Stick to Ursan if you want though, but I seriously suggest otherwise.
PS: Any reason this is still in Riverside?