Based on what you say here and your level of experience, you may want to try a Healer and use Gate extensively.

Another option could be an Air shifter and using the maps you have (especially http://diku.qhcf.net/cgi-bin/wiki.pl?InTheAir), tell people you will meet them as close as you think you can get. For example, if they want to go to Strange Island, tell them you'll meet them on Hamsah Docks, or if you can make it to the Aryth, you can use flyto and get to the same room as them.

Unfortunately I'm unfamiliar with this condition so I'm unable to give help directly about the problem. Hope this is at least a little helpful.

Hutto, the Sleepy Nitpicker