3 serials topology on Pro Mini

hello guys,

i make unit, based on pro mini 5v 16mhz, has 3 serial channels.

channel #1 used read / write data  , rc turbine engine ecu. @ fixed 9600 baud.
channel #2 used talk sbus2 futaba receiver @ 100k baud (has hw serial guess). channel needs minimum latency both read , write, out of state machine in code , run every main loop.
channel #3 used transfer parsed data  channel #1 bt module (can configure baud rate like).
and lastly, channel #4 i2c print data on lcd.

would recommendations far baud rates , serial libraries (hw.serial, sw.serial , alt.sw.serial , on).

i did read tips on altswserial github page:
http://www.pjrc.com/teensy/td_libs_altsoftserial.html
https://github.com/paulstoffregen/altsoftserial

here relevant quote:
"using both softwareserial , altsoftserial
it possible use both softwareserial , altsoftserial, , of course hardwareserial, have 3 serial ports! however, baud rates must chosen carefully!
because softwareserial creates 10 bit times of latency other libraries, should used device needing high baud rate. softwareserial should not used @ slow baud rates, because interfere other ports. softwareserial can not simultaenously transmit , receive, should used device never sends in both directions @ once.

hardwareserial can tolerate 20 bit times latency receive, or 10 bit times non-stop transmit. maintain full transmit speed, hardwareserial's baud rate should no greater softwareserial's. if continuous transmit not needed, hardwareserial can use baud rate twice fast softwareserial , still reliably receive. more twice softwareserial's baud not able receive reliably.

altsoftserial can tolerate 1 bit time latency, baud rate must @ least 10 times less baud rate used softwareserial.

if baud rates chosen wisely, 3 can work reliably! "

so thought doing following:
hw serial sbus2 100k baud
sw serial 57600 bt module
alt sw serial 9600 ecu

im not entirely sure of can managed reliabely.
any tips welcome.
thanks.

you need board has 3 or more hardware serial ports achieve results seem looking for. teensy 3+ boards have 3 hardware serial ports , are, well, teensy.

http://pjrc.com/teensy/index.html

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