my 2 cents; if you're going to play in euros then you should probably have the cash market up at all times (preferably CTD and OTRs) so you can actively follow the TED spreads. Burghardt's book will tell you how to do this. While you might not have the financial resources to trade TEDS directly; they can be indicative of what the market may do in terms of curve as the places to hedge along the GE curve are known as liquidity in 5, 10 yr bundles are usually too low to hedge size.