poor you - its awful when they suffer isnt it?
sounds like you have a good sleeper so go with your instinct with this one - if you feel the WI/WO works well and you can carry on doing it with more calming then stick with it but just try and see if any routine tweaks make the settling any easier - like becky said routine has a big impact on settling times for me!
I also use WI/WO and my LO has reflux so I never let her cry for more than all of about 10 seconds!! I WI kiss her gently about 3 times say key phrase then lay her down stroke her back 3 times then leave - repeat, repeat repeat!! always very calmly - consistancy is key for me - If I get stressed or rush it too much it results in major tantrums and crying - so be careful not to get aggitated and be really quietly softly spoken and she will respond well...
best of luck to you!
Annette.xx