2.4 antenna length and type
 

I'm trying to convert my Turnigy 9x to Tactic module with the anylink and I know nothing about antennas , and even very little about radios in fact. The most I've ever done was to solder on a new rx antenna with 27 mhz AM. The project is http://www.rcuniverse.com/forum/m_10994478/tm.htm and going well so far , and I see that the anylink antenna is larger , but much shorter than the turnigy. Here's the questions.

1. Can I solder the longer Turnigy antenna (without reduced range or other problem) to the tactic module even though it is longer? It would make it look nice and factory and the module would fit in the stock location with the stock turnigy antenna.
2. Is there 2 solder connections on each antenna? It kinda looks like it is a two connection deal. OR is it just a simple single wire like my old AM rx antennas?
3. Another option is to use the tactic short antenna wire up thru the turnigy TX housing , but it would fall very short and just barely come out the top of the TX. It would be much shorter than it's housing.
4. Is the diameter of the ant important? The tactic one looks like it is fatter wire or maybe more insulation? Is there a wire and shield (like coax cable)

Thanks to anyone who can help me with these basics.