Hellow!

I wanted to ask you guys something!
I was wondering about doing something "Epic" with my Toxicrene as I think it would look cool on Epic scale... some Cthulu like Tyranid biostructure.
The idea came out when I saw some guys doing an Imperator with an Imperial Knight from 40K.
Then I told myself... why not do something on that scale with tyranids?
It is a just for fun job to play with friends who will not be against this thing playing with my Tyranids.

So now is when I need your help.
I was wandering about what titan would be the best option to proxie it with.
My first thoughts went directly to the imperator, but, the Toxicrene is a melee creature, so sadly the Imperator is not the best option...
I thought then about the warlord, with Titan combat weapons on both legs, and 2 Ingerno guns to represent the tentacles, that add a lot of attacks on close combat and even in short range (15cm).

what do you think?
A close combat titan is just really terrible even if I just want to do it to represent what it looks like?
What changes would you make?
just delete the close combat weapons and add some cannons to the miniature to represent some other options? (I'd like to keep the tentacles for the Cthulu look of it)
And if you would do an Imperator... what weapons would you put on it?
I want to hear what you think about it.

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My Tyranid army: http://www.tacticalwargames.net/taccmd/viewtopic.php?f=7&t=29905