If the rose is going to be planted in the ground at some point reasonably soon (you say next year?), then you really don't need to spend vast amount on fancy obelisks or trellising.
For the moment keeep the rose pruned back, use a couple of those metal tomato spirals or a basic extendable x-style trellis to support the runners you do want to encourage, above all protect the root ball from drying out and especially from frost next winter.
Then enjoy planting it properly next Spring in a spot you can enjoy it!!