having a 2nd monitor on my mac mini but without thunderbolt

I have bought a new mac mini :

Intel Core i7 quadricœur à 2,6 GHz
16 Go de mémoire SDRAM DDR3 à 1 600 MHz (2 x 8 Go)
Disque SSD de 256 Go

I would like to use a the same time :

- my Philips 298P4 monitor 29" (resolution 2560x1080)
- my TV Samsung 40" (resolution 1920x1080)
- my HD omni interface from Avid in thunderbolt

The Philips monitor has 2 HDMI, 1 Dual-DVI, 2 display port (in order to make a chain with an other monitor in display port)
The TV has 4 HDMI, 1 VGA
The avid thunderbolt interface has only one TB port, so I can't make a chain.

I though about buying a thunderbolt station (elgato or caldigit) for having a second HDMI port.

But I would like to be sure that I could use AT THE SAME TIME:
- the HDMI of the mac mini for the monitor in 2560x1080 (i'm not sure that the mac mini have HDMI 1.4)
- the HDMI of the TB station in 1920x1080
- and the TB of the station for my Avid interface

I don't know if I can chain my monitor and my TV together (hdmi of mac mini-->1st display port of monitor, and then 2nd diplay port of monitor-->hdmi of TV)


Thanks for your answers.