What happens if you just select HamLib as keyer in cqrlog.
It does not need any parameters and your rig should know how to send cw string with ci-v command (as ic7300 does).

Splt spotting is untested here, but cqrlog polls rig with "fmv" (freq,mode,vfo) that means the current vfo gives frequency to cqrlog. Icoms, at least my 7300 and 706 can not answer to "v" vfo question it gives RPRT -11
Could it be somehow possible that your model gives TX frequency as default when split is on?
(You should see from TRCcontol window the frequency change when toggling split-button of rig)

For steady usb ports you should use udev rule.

Go to /etc/udev/rules.d/ folder. You should find there a file named like: 92-persistent-usb.rules

If there is not one, create with text editor. Name should start with number "XX-" that places the reading priority of file.
Inside the file are long lines:

#own CI-V box
ACTION=="add", SUBSYSTEMS=="usb", ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", ATTRS{product}=="USB 2.0 To COM Device", SYMLINK+="rig"
#IC7300
ACTION=="add", SUBSYSTEMS=="usb", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60" , ATTRS{product}=="CP2102 USB to UART Bridge Controller", SYMLINK+="icom7300"
ACTION=="add", SUBSYSTEMS=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="A601VSBR", SYMLINK+="cwkeyer"
ACTION=="add", SUBSYSTEMS=="usb", ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", ATTRS{product}=="USB-Serial Controller D", SYMLINK+="gps"
#ESP WiFi device via USB-TTL converter
ACTION=="add", KERNELS=="ttyUSB*", SUBSYSTEMS=="usb-serial", DRIVERS=="cp210x", SYMLINK+="ardu"
#Xduino UNO V
ACTION=="add", SUBSYSTEMS=="usb", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", SYMLINK+="ardu"
#Arduino UNO V2
ACTION=="add", SUBSYSTEMS=="usb", ATTRS{idVendor}=="2341", ATTRS{idProduct}=="0001", SYMLINK+="ardu"

# TYT MD-UV380
SUBSYSTEM=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="df11", MODE="666"

# Baofeng RD-5R Radioddity
SUBSYSTEM=="usb", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="666"

Kernel checks USB device ids at plugin phase and if they match makes a symlink to /dev/ folder.
In my case I have /dev/ic7300, /dev/rig, /dev/cwkeyer and so on.
Symlink points always to right ttyUSBX port.

For more help use Goggle with search words: udev symlink ttyusb
Symlinking device names is a MUST !

Hi!

With hamlib alone there is not much to do. It is just a program that can communicate with many rigs on input and gives equal output from then all to some other program that needs information from rig.
That way programmers can do one program for many rig brands and models.

You should use your linux'es (what distribution? Fedora, Ubuntu or what?) installer to get programs. That is the easiest way to get then work.
If you install cqrlog it will also install hamlib. See download page of this website.