1991 civic hatch PLEASE LOOK!

[ef9civichatch]

I am currently in the market for an ecu upgrade..
I'm looking for advice from anyone on the forum as to which hondata system I should choose....

I am currently running this set-up...
1991 Honda Civic w/ an OBD-0 B16A DOHC V-TEC. The B16A is using my stock 1991 si engine harness in conjunction with a PR3 ecu. I also have the hasport v-tec subharness. Bolt-on mods consist of an AEM intake, DC SPORTS 4-1 Header, and GREDDY cat-back.

Questions:
I currently have the two o2 sensors tapped together, which hasport instructed me to do with the v-tec subharness. Should I change this?

Should I convert to OBD-1? If so, what do i need to perform the conversion. Also, will this conflict with the two o2 sensors somehow?

Which Hondata system would be best suitable for my application (I want the capability of on-board tuning)?

Also down the road I want to run boost should I go ahead and get the boost option first time around or can I get an upgrade later???
I appreciate any help with this....

Thank's in advance, Vito Zehler